General Description
The MAX5490 precision resistor-divider consists of two accurately matched resistors with access to the ends and center of the divider. This device offers excellent resistance matching of 0.035% (A grade), 0.05% (B grade), and 0.1% (C grade). The MAX5490 provides an extremely low resistance-ratio temperature drift of 1ppm/°C (typ) over -40°C to +85°C, and has an end-to-end resistance of 100kΩ. Resistance ratios from 1:1 to 100:1 are available. Five standard ratios are available (see Table 1), and custom ratios are also available upon request. The MAX5490 is ideal for precision gain-setting applications where tight resistance matching and low temperature drift are necessary.

FEATUREs
♦ Resistance Ratios from 1:1 to 100:1
♦ Custom Ratios Available Upon Request
♦ Tight Initial Ratio Accuracy
0.035% (MAX5490A)
0.05% (MAX5490B)
0.1% (MAX5490C)
♦ Low 1ppm/°C (typ) Resistor-Ratio-Drift
♦ Up to 80V Operating Voltage Across Sum of R1 and R2
♦ Tiny 3-Pin SOT23 Package